Maret Tsarnaeva, an aunt of the two suspects in the Boston Marathon bombings, speaks to reporters from the lobby of her apartment building in Etobicoke, Ont., on April 19, 2013. Ms. Tsarnaeva said she needed more proof of her nephews’ involvement before believing they were behind the deadly blasts.(Chris Young/The Canadian Press)

Ms. Tsarnaeva, one of four trained lawyers in the family, was responsible for the paperwork that brought much of her family to North America, starting in 2002.(Chris Young/The Canadian Press)

Anzor Tsarnaev, the father of Dzhokhar and Tamerlan Tsarnaev, the two suspects in the Boston Marathon bombings, gives an interview on April 19, 2013. He described his son Dzhokhar, then alive and the object of an intense manhunt, as as “such an intelligent boy” and “an angel.”(REUTERS TV/REUTERS)

Mr. Tsarnaev now lives in Makhachkala, the capital city of Dagestan, due to his frustration with how spread out the family had become in North America, said Ms. Tsarnaeva.(REUTERS TV/REUTERS)

Ruslan Tsarni, an uncle of the suspects in the Boston Marathon bombings, is pictured outside his home in Montgomery Village, Maryland, on April 19, 2013. Mr. Tsarni delivered a strongly worded statement to his nephews and urged Dzhokhar, then alive and the object of a manhunt, to turn himself in.(JOSHUA ROBERTS/REUTERS)

Mr. Tsarni said his nephews “put a shame on the entire [Chechen] ethnicity.”(Jose Luis Magana/AP)